Mike Yardley is currently shooting a pair of Beretta 28-bore o/u guns - predominantly driven pheasants and partridges.
The last time I watched him shoot, he killed five good, driven pheasants for five shots and then sleeved his gun.
Sir Joseph Nickerson famously shot admirably with a trio of Purdey 28-bore over/unders.
This suggests that in the right hands, a 28-bore is a viable tool for killing driven game at normal ranges, but Mike shoots with tight chokes and, when called for, loads of up to an ounce. An ounce is all I ever use in my 12-bores.
I personally do not share the fad for small bores, believing the 12-bore to be the best suited to taking most game and providing more choice and better value in vintage gun buying.
However, if you wish to shoot game at normal ranges with a suitably loaded 28-bore, the evidence suggests that it is a reasonable thing to attempt and since this is a matter of personal choice, why not- and good luck!
